I see the Guild X-79 as rare due to the limited run number. (About 1,700 compared to how many Strats or Les Pauls?) Also, because, of the wacky headstock shape on them, you see a fair amount of them with the long horn on the headstock snapped off (which happened during shipping on the first one I bought and I restored another with a snapped off headstock horn.)
Having said that, I agree with comments above that if the frets are worn out, make it to play the way you want it. If it's in decent condition and close to being stock and you think you're going to sell it at some point, then maybe you want fret wire near the same as the original. Your call.